TY - JOUR T1 - Logic and Rational Requirements JF - Organon F Y1 - 2016 A1 - Tajer, Diego KW - Logic and rationality KW - normativity of logic KW - rational requirements AB - ABSTRACT: In this paper, I discuss the relation between logic and rationality. I develop (formally and conceptually) a rational requirement which can respond to the classic objections by Harman (1986). On the one hand, the requirement pays attention to the relevance of the premises and the conclusion, which is formally expressed by the notion of weak relative closure. The requirement also takes care of the complexity of the inferences. This notion of complexity is formally represented by a partially ordered scale of the difficulty of inferences, which is weaker than the notion of complexity as number of steps. IS - 4 VL - 23 SP - 460-487 UR - http://www.klemens.sav.sk/fiusav/doc/organon/2016/4/460-487.pdf U2 - Articles U3 - 460487 TI - Logic and Rational Requirements ER -